On The Gist, a new show at Musée d'Orsay in Paris is the first to tell the story of prostitution in art, 1850–1910. Our guest Mary Lane from the Wall Street Journal will share the highlights. Then, we check back in with vexillologist Ted Kaye about the new national flag selection processes in Fiji and New Zealand. For more flag news, we strongly recommend subscribing to Vexilloid Tabloid, the bimonthly newsletter of the Portland Flag Association. For the Spiel, innovative rapping campaign ads from Ben Carson and Jeb Bush. Today's sponsors: The Message, a new podcast series from GE Podcast Theater. RealtyShares. With RealtyShares, you can invest in professionally vetted residential and commercial real estate projects across the United States. Browse all the investments at no cost once you're qualified, invest as little as $1,000 per transaction, and diversify your portfolio by visiting RealtyShares.com/gist. Join Slate Plus! Members get bonus segments, exclusive member-only podcasts, and more. Sign up for a free trial today at slate.com/gistplus.

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